The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2019
Filed:
Aug. 08, 2014
Siemens Aktiengesellschaft, München, DE;
Ching-Pang Lee, Cincinnati, OH (US);
Kok-Mun Tham, Oviedo, FL (US);
SIEMENS AKTIENGESELLSCHAFT, München, DE;
Abstract
A compressor () configured for use in a gas turbine engine () and having a rotor assembly () with a pumping system () positioned on a rotor drum () to counteract reverse leakage flow at a gap () formed between one or more stator vane tips () and a radially outer surface () of the rotor drum (). The pumping system () may be from pumping components () positioned radially inward of one or more stator vane tips () to reduce, if not completely eliminate, reverse leakage flow at the stator vane tips (). In at least one embodiment, the pumping component () may be formed from one or more cutouts () in the outer surface () of the rotor drum (). In another embodiment, the pumping component () may be formed from at least one pumping fin () extending from the radially outer surface () of the rotor drum (). In at least one embodiment, rows () of pumping components () may be aligned with rows () of stator vanes () within the compressor ().